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Patent # Description
US-9,887,651 Method and apparatus for driving motor and appliance
A method and apparatus for driving motor and appliance. When a rotor of a motor rotates, a current angle of the rotor is detected at a current moment by using a...
US-9,887,650 Inverter device and power steering device
An inverter device includes a switch circuit configured by series-connecting two N-channel semiconductor switching elements in opposite directions so that the...
US-9,887,648 Motor speed control with speed foldback for phase imbalance protection
A variable frequency motor drive comprises a converter including a rectifier having an input for connection to an AC power source and converting the AC power to...
US-9,887,647 Method for checking out-of-step of synchronous motor
A method for checking an out-of-step of a synchronous motor includes detecting three-phase currents of the synchronous motor; determining whether a relationship...
US-9,887,646 Method for checking out-of-step of synchronous motor
A method for checking an out-of-step of a synchronous motor includes detecting electric degrees of the synchronous motor, in which the electric degrees comprise...
US-9,887,645 Motor drive apparatus having function of suppressing temporal variation of regenerative current
A motor drive apparatus comprises: a converter which converts DC power into AC power and returns the AC power to an AC power supply; a 120-degree conduction...
US-9,887,644 Stretchable triboelectric generator, stretchable electricity storage device, and wearable electronic device
Disclosed herein are a stretchable triboelectric generator, a stretchable electricity storage device and a wearable electronic device. The stretchable...
US-9,887,643 Bidirectional electrical signal converter
A bidirectional AC-to-DC and DC-to-AC circuit includes a first inductor-capacitor (LC) circuit connected to an AC power source, a transistor synchronized with...
US-9,887,642 Method and apparatus for estimated inductance and current feedback control of a grid-connected inverter with...
An inverter output current passes from an inverter phase output, through a non-linear inverter side inductor, and into a line that connects through a grid side...
US-9,887,641 Power converter
A power converter includes: a plurality of external terminals; a grounded earth terminal; a power conversion circuit; a ground conductor; and a plurality of...
US-9,887,640 DC-eliminating current controller for grid-connected DC/AC converters
Systems, methods, and devices which eliminate the DC current from the output of grid-connected inverters. A current controller is provided which interfaces with...
US-9,887,639 Communication within a power inverter using transformer voltage frequency
Communicating across a power transformer is provided. Processes can include outputting a cyclical voltage at an alternating frequency across a multiple winding...
US-9,887,638 Power conversion apparatus with frequency operation change based on input voltage
If an input voltage of a DC/DC converter is lower than a first voltage value that is set in advance, a converter controller maintains an output voltage of the...
US-9,887,637 High speed programmable threshold gallium nitride power limiter
An adjustable threshold power limiter circuit. A number of switching elements are included with at least a first and second switching element that each has a...
US-9,887,636 Method of reducing common mode current
A method of reducing common mode current that flows between an internal ground of an electrical circuit and an Earth ground, the electrical circuit is supplied...
US-9,887,635 Double-ended forward converter and power supply device
A double-ended forward converter includes: a first switching element and a second switching element that are coupled to a primary side of a transformer; a pulse...
US-9,887,634 Circuits and methods for synchronous rectification in resonant converters
A resonant converter includes a primary stage having first and second switches coupled in series, a controller coupled to the first switch and the second switch...
US-9,887,633 Resonant converter control techniques to manage negative SR current
This disclosure provides control techniques for a resonant converter. In one embodiment, a resonant converter controller includes predictive gate drive...
US-9,887,632 Step-up KP ripple free converter
A step-up ripple free converter applied to achieve a characteristic of zero-ripple voltage, which ripple voltage is near zero, includes a ripple-regulating...
US-9,887,631 Current sampling method and current sampling apparatus for isolated power converter
Disclosed are a current sampling apparatus and a current sampling method for an isolated power converter. The isolated power converter includes a square wave...
US-9,887,630 Gain adjustment circuit to enhance stability of multiple-output AC/DC converters
This disclosure describes an AC/DC power converter that produces multiple output voltage levels. The AC/DC power converter may include a gain adjustment...
US-9,887,629 Pulsating current ripple cancelling circuit and power converting system using the same
The present invention relates to a pulsating current ripple cancelling circuit and a power converting system using the same cancelling circuit. The pulsating...
US-9,887,628 Power loss protection integrated circuit
A power loss protection integrated circuit includes a current switch circuit (eFuse), a VIN terminal, a VOUT terminal, a buck/boost controller, and a storage...
US-9,887,627 Low profile power conversion system for rooftop photovoltaic power systems
The disclosed embodiments and principles provide a way to integrate high-efficiency, low-profile power electronics with localized maximum power point tracking...
US-9,887,626 Adaptive feedback control system and method for voltage regulators
A voltage regulator includes a first feedback circuit, a second feedback circuit, and a feedback signal adaptive circuit. The first voltage feedback circuit...
US-9,887,625 Output current monitor circuit for switching regulator
A circuit and method for providing an improved current monitoring circuit for a switching regulator. A circuit providing switching regulation with an improved...
US-9,887,624 System and method for a switching converter
According to various embodiments, a method for operating a switching converter includes determining an operating parameter of the switching converter and, if...
US-9,887,623 Efficient voltage conversion
An apparatus for providing on-chip voltage-regulated power includes a switched capacitor voltage conversion circuit that receives an elevated power demand...
US-9,887,622 Charge pump stability control
An apparatus for power conversion includes a switching network that controls interconnections between pump capacitors in a capacitor network that has a terminal...
US-9,887,621 Power factor correction circuit and method for correcting power factor, converter device thereof
The present examples relate to a power factor correction device, a power factor correction method, and a corresponding converter, in which when an input signal...
US-9,887,620 Power converter
The present disclosure illustrates a power converter electrically connected between an external power supply and an electronic device. The electronic device has...
US-9,887,619 System and method for a normally-on switched mode power supply
A method for operating a switched mode power supply (SMPS) during a start-up sequence includes receiving an input current at a bias supply circuit while a first...
US-9,887,618 Power supply device sensing AC-off state
There is provided a power supply device sensing an AC-off state. The power supply device includes a rectifier configured to rectify AC power into DC power, a...
US-9,887,617 Power conversion device and control method thereof
According to one embodiment, there is provided a power conversion device, including a control unit configured to control ON/OFF of a switching element of a...
US-9,887,616 Electric power conversion apparatus with active filter
A single-phase AC/DC electric power conversion apparatus includes an indirect matrix converter having an input interface to receive a first alternating current...
US-9,887,615 Bidirectional insulated DC-DC converter
A bidirectional insulated DC-DC converter includes a transformer, a secondary circuit, and a control circuit. When electric power is transferred from the...
US-9,887,614 Apparatus, systems and methods for average current control in a buck DC/DC LED driver
Various embodiments of apparatuses, systems and methods for regulating the currents provided by a DCDC buck converters to an LED unit are provided. In...
US-9,887,613 Lithography device with eddy-current brake
A lithography device includes an eddy-current brake for damping the movement of a structural element of the lithography device. The eddy-current brake includes...
US-9,887,612 Linear actuator with built-in encoder
A linear motor which includes a bobbin with an interior lengthwise axial opening with a permanent magnet assembly within the opening and electricity carrying...
US-9,887,611 Linear motor
A linear motor includes a mover movable in a first direction and a stator. A yoke includes a pair of back yokes provided opposite to each other so as to...
US-9,887,610 Flexible devices, systems, and methods for harvesting energy
Embodiments of the present invention relate to systems, methods, and apparatus for harvesting energy by transforming mechanical energy into electrical energy....
US-9,887,609 Shaftless fan structure having axial air slit
A shaftless fan structure having an axial air slit includes: a base, including a bottom plate connected with a fasten post; a rotor set, including a impeller...
US-9,887,608 Rotor, stator and motor
A rotor with four axially stacked rotor cores, and a plurality of field magnets interposed between them. Each rotor core includes a rotor-side claw-shaped...
US-9,887,607 Method for forming and annealing an insulated conductor
A method of forming an insulated conductor, includes forming an insulated conductor to modify a cross sectional shape thereof. Heating at least a portion of the...
US-9,887,606 Electric machine with a resistor for dissipating shaft voltages
An electric machine with at least one electrical resistor (24) for dissipating shaft voltages occurring at the rotor shaft (2) of a rotor (1), in which the...
US-9,887,605 Wind-driven electricity generation device and rotor assembly thereof
A wind-driven electricity generation device includes a stator assembly and a rotor assembly. The stator assembly includes a case and a magnetically permeable...
US-9,887,604 Apparatus for kinetic energy storage having a flywheel with pump-active surfaces
An apparatus for kinetic energy storage includes an electrical machine operable at least in one of motor mode and generator mode, and at least one energy...
US-9,887,603 Wet-running centrifugal pump
A wet-running centrifugal pump includes an electric motor (1) and a centrifugal pump (7) which is driven thereby. The electric motor (1) has a rotor (4) which...
US-9,887,602 Fan bearing cup connection structure
A fan bearing cup connection structure includes a bearing cup, a bottom board and a connection member. The bearing cup has a receiving space, a connected...
US-9,887,601 Stator of rotary electric machine
First convexities and second convexities are formed in opposing first wall surfaces and second wall surfaces of lead wire end portion holding grooves, and in...
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